ASTM D7032-21
(Specification)Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails
Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails
ABSTRACT
This specification presents the standard procedures for establishing the performance rating of wood-plastic composite (WPC) deck boards and guardrail systems (guards or handrails). The purpose of this specification is to establish the basis for code recognition of these products or systems in exterior applications where combustible construction is allowed. The general requirements foe these products shall be dictated by their performance in the following test methods: flesural tests; temperature and moisture effects; ultraviolet resistance test; freeze-thaw resistance test; biodeterioration tests; and fire performance tests. Deck boards shall additionally examined by: creep-recovery test; determination of unadjusted allowable load; mechanical fastener holding tests; and slip resistance test. In the same manner, guards and handrails shall additionally be analyzed through concentrated load tests, and one- and two-family dwelling requirements.
SCOPE
1.1 This specification covers procedures to establish a performance rating for wood-plastic composite and plastic lumber for use as exterior deck boards, stair treads, guards, and handrails. The purpose of this specification is to establish a basis for code recognition of these products or systems in exterior applications.
Note 1: While wood-plastic composites contain wood or other cellulosic materials, the presence of wood or other cellulosic materials in plastic lumber is not required by this specification. Due to non-wood materials in wood-plastic composites and plastic lumber the structural, physical, fire, and other attributes may not be similar to those of wood.
Note 2: The products addressed in this standard are considered combustible. No fire response characteristic is required in this specification except for flame spread index as determined in accordance with Test Method E84.
1.1.1 The plastic component of wood-plastic composites and plastic lumber covered by this specification shall consist primarily of thermoplastics.
1.2 Deck boards, stair treads, guards, and handrails covered by this specification are permitted to be of any code compliant shape and thickness (solid or non-solid).
1.3 Wood-plastic composites and plastic lumber are produced in a broad range of fiber and/or resin formulations. It is recognized that the performance requirements in this specification are valid for any material or combination of materials used as deck boards, stair treads, guards, or handrails.
1.4 Details of manufacturing processes are beyond the scope of this specification.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 Table of Contents:
Section
Scope
1
Referenced Documents
2
Terminology
3
General Requirements
4
Sampling
4.1
Sample Size
4.2
Conditioning
4.3
Flexural Tests
4.4
Temperature and Moisture Effects
4.5
Ultraviolet (UV) Resistance Test
4.6
Freeze-Thaw Resistance Test
4.7
Biodeterioration Tests
4.8
Fire Performance Tests
4.9
Deck Board Performance Requirements
5
General
5.1
Flexural Performance Tests
5.2
Determination of the Unadjusted Allowable Load
5.3
Creep-Recovery Test
5.4
Mechanical Fastener Holding Tests
5.5
Slip Resistance Test
5.6
Guard and Handrail Performance Requirements
6
General
6.1
Guardrail System Test Requirements
6.2
One- and Two-Family Dwelling Requirements...
General Information
Relations
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7032 −21
Standard Specification for
Establishing Performance Ratings for Wood-Plastic
Composite and Plastic Lumber Deck Boards, Stair Treads,
1
Guards, and Handrails
This standard is issued under the fixed designation D7032; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This specification covers procedures to establish a
responsibility of the user of this standard to establish appro-
performance rating for wood-plastic composite and plastic
priate safety, health, and environmental practices and deter-
lumberforuseasexteriordeckboards,stairtreads,guards,and
mine the applicability of regulatory limitations prior to use.
handrails. The purpose of this specification is to establish a
1.7 Table of Contents:
basis for code recognition of these products or systems in
Section
exterior applications.
Scope 1
Referenced Documents 2
NOTE 1—While wood-plastic composites contain wood or other cellu-
Terminology 3
losic materials, the presence of wood or other cellulosic materials in
General Requirements 4
plastic lumber is not required by this specification. Due to non-wood
Sampling 4.1
materials in wood-plastic composites and plastic lumber the structural,
Sample Size 4.2
physical, fire, and other attributes may not be similar to those of wood.
Conditioning 4.3
NOTE 2—The products addressed in this standard are considered
Flexural Tests 4.4
combustible. No fire response characteristic is required in this specifica-
Temperature and Moisture Effects 4.5
tion except for flame spread index as determined in accordance with Test
Ultraviolet (UV) Resistance Test 4.6
Method E84. Freeze-Thaw Resistance Test 4.7
Biodeterioration Tests 4.8
1.1.1 The plastic component of wood-plastic composites
Fire Performance Tests 4.9
and plastic lumber covered by this specification shall consist Deck Board Performance Requirements 5
General 5.1
primarily of thermoplastics.
Flexural Performance Tests 5.2
Determination of the Unadjusted Allowable 5.3
1.2 Deck boards, stair treads, guards, and handrails covered
Load
by this specification are permitted to be of any code compliant
Creep-Recovery Test 5.4
shape and thickness (solid or non-solid).
Mechanical Fastener Holding Tests 5.5
Slip Resistance Test 5.6
1.3 Wood-plastic composites and plastic lumber are pro-
Guard and Handrail Performance 6
duced in a broad range of fiber and/or resin formulations. It is Requirements
General 6.1
recognized that the performance requirements in this specifi-
Guardrail System Test Requirements 6.2
cation are valid for any material or combination of materials
One- and Two-Family Dwelling 6.2.1.1
used as deck boards, stair treads, guards, or handrails. Requirements
Handrail Test Requirements (Concentrated 6.3
1.4 Details of manufacturing processes are beyond the
Load)
Report 7
scope of this specification.
Independent Inspection 8
1.5 The values stated in inch-pound units are to be regarded Manufacturing Standard 9
Precision and Bias 10
as standard. The values given in parentheses are mathematical
Keywords 11
conversions to SI units that are provided for information only
Two-Span Test Method Annex A1
and are not considered standard. Commentary Appendix X1
1.8 This international standard was developed in accor-
1
dance with internationally recognized principles on standard-
This specification is under the jurisdiction ofASTM Committee D07 on Wood
andisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineered
ization established in the Decision on Principles for the
Wood Products.
Development of International Standards, Guides and Recom-
Current edition approved Nov. 1, 2021. Published December 2021. Originally
mendations issued by the World Trade Organization Technical
approved in 2004. Last previous edition approved in 2017 as D7032–17. DOI:
10.1520/D7032-21. Barriers to Trade (TBT) Committee.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7032 − 21
2. Referenced Documents G154Practice for Operating Fluorescent Ultraviolet (UV)
2 Lamp Apparatus for Exposure of Nonmetallic Materials
2.1 ASTM Standards:
D9Terminology Relating to Wood and Wood-Based Prod- 2.2 Other References:
AWPAStandard E1Standard Method for Laboratory Evalu-
ucts
D790Test Meth
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7032 − 17 D7032 − 21
Standard Specification for
Establishing Performance Ratings for Wood-Plastic
Composite and Plastic Lumber Deck Boards, Stair Treads,
1
Guards, and Handrails
This standard is issued under the fixed designation D7032; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers procedures to establish a performance rating for wood-plastic composite and plastic lumber for use
as exterior deck boards, stair treads, guards, and handrails. The purpose of this specification is to establish a basis for code
recognition of these products or systems in exterior applications. The products addressed in this specification are considered
combustible.
NOTE 1—While wood-plastic composites contain wood or other cellulosic materials, the presence of wood or other cellulosic materials in plastic lumber
is not required by this specification. Due to non-wood materials in wood-plastic composites and plastic lumber the structural, physical, fire, and other
attributes may not be similar to those of wood.
NOTE 2—The products addressed in this standard are considered combustible. No fire response characteristic is required in this specification except for
flame spread index as determined in accordance with Test Method E84.
1.1.1 The plastic component of wood-plastic composites and plastic lumber covered by this specification shall consist primarily
of thermoplastics.
1.2 Deck boards, stair treads, guards, and handrails covered by this specification are permitted to be of any code compliant shape
and thickness (solid or non-solid).
1.3 Wood-plastic composites and plastic lumber are produced in a broad range of fiber and/or resin formulations. It is recognized
that the performance requirements in this specification are valid for any material or combination of materials used as deck boards,
stair treads, guards, or handrails.
1.4 Details of manufacturing processes are beyond the scope of this specification.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory requirementslimitations prior to use.
1
This specification is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.02 on Lumber and Engineered Wood
Products.
Current edition approved March 1, 2017Nov. 1, 2021. Published April 2017December 2021. Originally approved in 2004. Last previous edition approved in 20152017
as D7032 – 15.D7032 – 17. DOI: 10.1520/D7032-17.10.1520/D7032-21.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7032 − 21
1.7 Table of Contents:
Section
Scope 1
Referenced Documents 2
Terminology 3
General Requirements 4
Sampling 4.1
Sample Size 4.2
Conditioning 4.3
Flexural Tests 4.4
Temperature and Moisture Effects 4.5
Ultraviolet (UV) Resistance Test 4.6
Freeze-Thaw Resistance Test 4.7
Biodeterioration Tests 4.8
Fire Performance Tests 4.9
Deck Board Performance Requirements 5
General 5.1
Flexural Performance Tests 5.2
Determination of the Unadjusted Allowable 5.3
Load
Creep-Recovery Test 5.4
Mechanical Fastener Holding Tests 5.5
Slip Resistance Test 5.6
Guard and Handrail Performance 6
Requirements
General 6.1
Guardrail System Test Requirements 6.2
One- and Two-Family Dwelling 6.2.1.1
Requirements
Handrail Test Requirements (Concentrated 6.3
Load)
Report 7
Independent Inspection 8
Manufacturing Standard 9
Precision and Bias 10
Keywords 11
Two-Span Test Method Annex A1
Commentary Appendix X1
1.8 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Re
...
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